<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			let num = 0;
		
			while( num < 5){
				
				num ++ ;
				if(num == 3){
					continue;
				}
			
				alert(`跑了第${num}圈`);
				
				
				
			}
		
		/**
		 * 计算  1~100相加的和
		 */
		/* let result = 0 ; //结果
		
		let i = 1; //每一个数
		
		while ( i <= 100){
			
			result += i;
			i ++ ;
		}
		
		console.log(result)
		 */
		</script>
	</body>
</html>
